initialize backend project

Signed-off-by: Tobias Erbshäußer <tobias@tesoft.dev>

backend/main.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"log"
+	"net/http"
+	"os"
+)
+
+func main() {
+	port := os.Getenv("PORT")
+	if port == "" {
+		port = "8080"
+	}
+
+	staticFolder := os.Getenv("STATIC_FOLDER")
+	if staticFolder == "" {
+		staticFolder = "static"
+	}
+
+	fsHandler := http.FileServer(http.Dir(staticFolder))
+	apiHandler := NewApiHandler()
+
+	mux := http.NewServeMux()
+	mux.Handle("/", fsHandler)
+	mux.Handle("/api/", apiHandler)
+
+	log.Println("Listening on port", port)
+	err := http.ListenAndServe(":"+port, mux)
+	if err != nil {
+		log.Fatalln(err.Error())
+	}
+}